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	Copying between calldata and storage.
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								ArrayUtils.cpp
									
									
									
									
									
								
							
							
						
						
									
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								ArrayUtils.cpp
									
									
									
									
									
								
							| @ -37,140 +37,110 @@ void ArrayUtils::copyArrayToStorage(ArrayType const& _targetType, ArrayType cons | ||||
| 	// stack layout: [source_ref] target_ref (top)
 | ||||
| 	// need to leave target_ref on the stack at the end
 | ||||
| 	solAssert(_targetType.getLocation() == ArrayType::Location::Storage, ""); | ||||
| 	solAssert( | ||||
| 		_sourceType.getLocation() == ArrayType::Location::CallData || | ||||
| 			_sourceType.getLocation() == ArrayType::Location::Storage, | ||||
| 		"Given array location not implemented." | ||||
| 	); | ||||
| 
 | ||||
| 	IntegerType uint256(256); | ||||
| 	Type const* targetBaseType = _targetType.isByteArray() ? &uint256 : &(*_targetType.getBaseType()); | ||||
| 	Type const* sourceBaseType = _sourceType.isByteArray() ? &uint256 : &(*_sourceType.getBaseType()); | ||||
| 
 | ||||
| 	switch (_sourceType.getLocation()) | ||||
| 	{ | ||||
| 	case ArrayType::Location::CallData: | ||||
| 	{ | ||||
| 		solAssert(_targetType.isByteArray(), "Non byte arrays not yet implemented here."); | ||||
| 		solAssert(_sourceType.isByteArray(), "Non byte arrays not yet implemented here."); | ||||
| 		// This also assumes that after "length" we only have zeros, i.e. it cannot be used to
 | ||||
| 		// slice a byte array from calldata.
 | ||||
| 
 | ||||
| 		// stack: source_offset source_len target_ref
 | ||||
| 		// fetch old length and convert to words
 | ||||
| 		m_context << eth::Instruction::DUP1 << eth::Instruction::SLOAD; | ||||
| 		convertLengthToSize(_targetType); | ||||
| 		// stack here: source_offset source_len target_ref target_length_words
 | ||||
| 		// actual array data is stored at SHA3(storage_offset)
 | ||||
| 		m_context << eth::Instruction::DUP2; | ||||
| 		CompilerUtils(m_context).computeHashStatic(); | ||||
| 		// compute target_data_end
 | ||||
| 		m_context << eth::Instruction::DUP1 << eth::Instruction::SWAP2 << eth::Instruction::ADD | ||||
| 				  << eth::Instruction::SWAP1; | ||||
| 		// stack here: source_offset source_len target_ref target_data_end target_data_ref
 | ||||
| 		// store length (in bytes)
 | ||||
| 		m_context << eth::Instruction::DUP4 << eth::Instruction::DUP1 << eth::Instruction::DUP5 | ||||
| 			<< eth::Instruction::SSTORE; | ||||
| 		// jump to end if length is zero
 | ||||
| 		m_context << eth::Instruction::ISZERO; | ||||
| 		eth::AssemblyItem copyLoopEnd = m_context.newTag(); | ||||
| 		m_context.appendConditionalJumpTo(copyLoopEnd); | ||||
| 		// add length to source offset
 | ||||
| 		m_context << eth::Instruction::DUP5 << eth::Instruction::DUP5 << eth::Instruction::ADD; | ||||
| 		// stack now: source_offset source_len target_ref target_data_end target_data_ref source_end
 | ||||
| 		// store start offset
 | ||||
| 		m_context << eth::Instruction::DUP6; | ||||
| 		// stack now: source_offset source_len target_ref target_data_end target_data_ref source_end calldata_offset
 | ||||
| 		eth::AssemblyItem copyLoopStart = m_context.newTag(); | ||||
| 		m_context << copyLoopStart | ||||
| 				  // copy from calldata and store
 | ||||
| 				  << eth::Instruction::DUP1 << eth::Instruction::CALLDATALOAD | ||||
| 				  << eth::Instruction::DUP4 << eth::Instruction::SSTORE | ||||
| 				  // increment target_data_ref by 1
 | ||||
| 				  << eth::Instruction::SWAP2 << u256(1) << eth::Instruction::ADD | ||||
| 				  // increment calldata_offset by 32
 | ||||
| 				  << eth::Instruction::SWAP2 << u256(32) << eth::Instruction::ADD | ||||
| 				  // check for loop condition
 | ||||
| 				  << eth::Instruction::DUP1 << eth::Instruction::DUP3 << eth::Instruction::GT; | ||||
| 		m_context.appendConditionalJumpTo(copyLoopStart); | ||||
| 		m_context << eth::Instruction::POP << eth::Instruction::POP; | ||||
| 		m_context << copyLoopEnd; | ||||
| 
 | ||||
| 		// now clear leftover bytes of the old value
 | ||||
| 		// stack now: source_offset source_len target_ref target_data_end target_data_ref
 | ||||
| 		clearStorageLoop(IntegerType(256)); | ||||
| 		// stack now: source_offset source_len target_ref target_data_end
 | ||||
| 
 | ||||
| 		m_context << eth::Instruction::POP << eth::Instruction::SWAP2 | ||||
| 			<< eth::Instruction::POP << eth::Instruction::POP; | ||||
| 		break; | ||||
| 	} | ||||
| 	case ArrayType::Location::Storage: | ||||
| 	{ | ||||
| 	// this copies source to target and also clears target if it was larger
 | ||||
| 
 | ||||
| 		solAssert(sourceBaseType->getStorageSize() == targetBaseType->getStorageSize(), | ||||
| 			"Copying with different storage sizes not yet implemented."); | ||||
| 		// stack: source_ref target_ref
 | ||||
| 	// TODO unroll loop for small sizes
 | ||||
| 
 | ||||
| 	// stack: source_ref [source_length] target_ref
 | ||||
| 	// store target_ref
 | ||||
| 		m_context << eth::Instruction::SWAP1 << eth::Instruction::DUP2; | ||||
| 		// stack: target_ref source_ref target_ref
 | ||||
| 		// fetch lengthes
 | ||||
| 	for (unsigned i = _sourceType.getSizeOnStack(); i > 0; --i) | ||||
| 		m_context << eth::swapInstruction(i); | ||||
| 	if (_sourceType.getLocation() != ArrayType::Location::CallData || !_sourceType.isDynamicallySized()) | ||||
| 		retrieveLength(_sourceType); // otherwise, length is already there
 | ||||
| 	// stack: target_ref source_ref source_length
 | ||||
| 	m_context << eth::Instruction::DUP3; | ||||
| 	// stack: target_ref source_ref source_length target_ref
 | ||||
| 	retrieveLength(_targetType); | ||||
| 		m_context << eth::Instruction::SWAP2; | ||||
| 		// stack: target_ref target_len target_ref source_ref
 | ||||
| 		retrieveLength(_sourceType); | ||||
| 		// stack: target_ref target_len target_ref source_ref source_len
 | ||||
| 	// stack: target_ref source_ref source_length target_ref target_length
 | ||||
| 	if (_targetType.isDynamicallySized()) | ||||
| 		// store new target length
 | ||||
| 			m_context << eth::Instruction::DUP1 << eth::Instruction::DUP4 << eth::Instruction::SSTORE; | ||||
| 		m_context << eth::Instruction::DUP3 << eth::Instruction::DUP3 << eth::Instruction::SSTORE; | ||||
| 	// compute hashes (data positions)
 | ||||
| 		m_context << eth::Instruction::SWAP2; | ||||
| 	m_context << eth::Instruction::SWAP1; | ||||
| 	if (_targetType.isDynamicallySized()) | ||||
| 		CompilerUtils(m_context).computeHashStatic(); | ||||
| 	// stack: target_ref source_ref source_length target_length target_data_pos
 | ||||
| 	m_context << eth::Instruction::SWAP1; | ||||
| 		if (_sourceType.isDynamicallySized()) | ||||
| 	convertLengthToSize(_targetType); | ||||
| 	m_context << eth::Instruction::DUP2 << eth::Instruction::ADD; | ||||
| 	// stack: target_ref source_ref source_length target_data_pos target_data_end
 | ||||
| 	m_context << eth::Instruction::SWAP3; | ||||
| 	// stack: target_ref target_data_end source_length target_data_pos source_ref
 | ||||
| 	// skip copying if source length is zero
 | ||||
| 	m_context << eth::Instruction::DUP3 << eth::Instruction::ISZERO; | ||||
| 	eth::AssemblyItem copyLoopEnd = m_context.newTag(); | ||||
| 	m_context.appendConditionalJumpTo(copyLoopEnd); | ||||
| 
 | ||||
| 	if (_sourceType.getLocation() == ArrayType::Location::Storage && _sourceType.isDynamicallySized()) | ||||
| 		CompilerUtils(m_context).computeHashStatic(); | ||||
| 		// stack: target_ref target_len source_len target_data_pos source_data_pos
 | ||||
| 		m_context << eth::Instruction::DUP4; | ||||
| 	// stack: target_ref target_data_end source_length target_data_pos source_data_pos
 | ||||
| 	m_context << eth::Instruction::SWAP2; | ||||
| 	convertLengthToSize(_sourceType); | ||||
| 		m_context << eth::Instruction::DUP4; | ||||
| 		convertLengthToSize(_sourceType); | ||||
| 		// stack: target_ref target_len source_len target_data_pos source_data_pos target_size source_size
 | ||||
| 		// @todo we might be able to go without a third counter
 | ||||
| 		m_context << u256(0); | ||||
| 		// stack: target_ref target_len source_len target_data_pos source_data_pos target_size source_size counter
 | ||||
| 	m_context << eth::Instruction::DUP3 << eth::Instruction::ADD; | ||||
| 	// stack: target_ref target_data_end source_data_pos target_data_pos source_data_end
 | ||||
| 	eth::AssemblyItem copyLoopStart = m_context.newTag(); | ||||
| 	m_context << copyLoopStart; | ||||
| 	// check for loop condition
 | ||||
| 		m_context << eth::Instruction::DUP1 << eth::Instruction::DUP3 | ||||
| 	m_context | ||||
| 		<< eth::Instruction::DUP3 << eth::Instruction::DUP2 | ||||
| 		<< eth::Instruction::GT << eth::Instruction::ISZERO; | ||||
| 		eth::AssemblyItem copyLoopEnd = m_context.newTag(); | ||||
| 	m_context.appendConditionalJumpTo(copyLoopEnd); | ||||
| 	// stack: target_ref target_data_end source_data_pos target_data_pos source_data_end
 | ||||
| 	// copy
 | ||||
| 		m_context << eth::Instruction::DUP4 << eth::Instruction::DUP2 << eth::Instruction::ADD; | ||||
| 	if (sourceBaseType->getCategory() == Type::Category::Array) | ||||
| 	{ | ||||
| 		m_context << eth::Instruction::DUP3 << eth::Instruction::DUP3; | ||||
| 		copyArrayToStorage( | ||||
| 			dynamic_cast<ArrayType const&>(*targetBaseType), | ||||
| 			dynamic_cast<ArrayType const&>(*sourceBaseType) | ||||
| 		); | ||||
| 		m_context << eth::Instruction::POP; | ||||
| 	} | ||||
| 	else | ||||
| 	{ | ||||
| 		m_context << eth::Instruction::DUP3; | ||||
| 		if (_sourceType.getLocation() == ArrayType::Location::Storage) | ||||
| 			StorageItem(m_context, *sourceBaseType).retrieveValue(SourceLocation(), true); | ||||
| 		m_context << eth::dupInstruction(5 + sourceBaseType->getSizeOnStack()) | ||||
| 			<< eth::dupInstruction(2 + sourceBaseType->getSizeOnStack()) << eth::Instruction::ADD; | ||||
| 		else if (sourceBaseType->isValueType()) | ||||
| 			CompilerUtils(m_context).loadFromMemoryDynamic(*sourceBaseType, true, true, false); | ||||
| 		else | ||||
| 			solAssert(false, "Copying of unknown type requested."); | ||||
| 		m_context << eth::dupInstruction(2 + sourceBaseType->getSizeOnStack()); | ||||
| 		StorageItem(m_context, *targetBaseType).storeValue(*sourceBaseType, SourceLocation(), true); | ||||
| 		// increment
 | ||||
| 		m_context << targetBaseType->getStorageSize() << eth::Instruction::ADD; | ||||
| 	} | ||||
| 	// increment source
 | ||||
| 	m_context | ||||
| 		<< eth::Instruction::SWAP2 | ||||
| 		<< (_sourceType.getLocation() == ArrayType::Location::Storage ? | ||||
| 			sourceBaseType->getStorageSize() : | ||||
| 			sourceBaseType->getCalldataEncodedSize()) | ||||
| 		<< eth::Instruction::ADD | ||||
| 		<< eth::Instruction::SWAP2; | ||||
| 	// increment target
 | ||||
| 	m_context | ||||
| 		<< eth::Instruction::SWAP1 | ||||
| 		<< targetBaseType->getStorageSize() | ||||
| 		<< eth::Instruction::ADD | ||||
| 		<< eth::Instruction::SWAP1; | ||||
| 	m_context.appendJumpTo(copyLoopStart); | ||||
| 	m_context << copyLoopEnd; | ||||
| 
 | ||||
| 	// zero-out leftovers in target
 | ||||
| 		// stack: target_ref target_len source_len target_data_pos source_data_pos target_size source_size counter
 | ||||
| 		// add counter to target_data_pos
 | ||||
| 		m_context << eth::Instruction::DUP5 << eth::Instruction::ADD | ||||
| 				  << eth::Instruction::SWAP5 << eth::Instruction::POP; | ||||
| 		// stack: target_ref target_len target_data_pos_updated target_data_pos source_data_pos target_size source_size
 | ||||
| 		// add size to target_data_pos to get target_data_end
 | ||||
| 		m_context << eth::Instruction::POP << eth::Instruction::DUP3 << eth::Instruction::ADD | ||||
| 				  << eth::Instruction::SWAP4 | ||||
| 				  << eth::Instruction::POP  << eth::Instruction::POP << eth::Instruction::POP; | ||||
| 	// stack: target_ref target_data_end source_data_pos target_data_pos source_data_end
 | ||||
| 	m_context << eth::Instruction::POP << eth::Instruction::SWAP1 << eth::Instruction::POP; | ||||
| 	// stack: target_ref target_data_end target_data_pos_updated
 | ||||
| 	clearStorageLoop(*targetBaseType); | ||||
| 	m_context << eth::Instruction::POP; | ||||
| 		break; | ||||
| 	} | ||||
| 	default: | ||||
| 		solAssert(false, "Given byte array location not implemented."); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| void ArrayUtils::clearArray(ArrayType const& _type) const | ||||
| @ -290,13 +260,25 @@ void ArrayUtils::clearStorageLoop(Type const& _type) const | ||||
| 	m_context << eth::Instruction::POP; | ||||
| } | ||||
| 
 | ||||
| void ArrayUtils::convertLengthToSize(ArrayType const& _arrayType) const | ||||
| void ArrayUtils::convertLengthToSize(ArrayType const& _arrayType, bool _pad) const | ||||
| { | ||||
| 	if (_arrayType.getLocation() == ArrayType::Location::Storage) | ||||
| 	{ | ||||
| 		if (_arrayType.isByteArray()) | ||||
| 			m_context << u256(31) << eth::Instruction::ADD | ||||
| 				<< u256(32) << eth::Instruction::SWAP1 << eth::Instruction::DIV; | ||||
| 		else if (_arrayType.getBaseType()->getStorageSize() > 1) | ||||
| 			m_context << _arrayType.getBaseType()->getStorageSize() << eth::Instruction::MUL; | ||||
| 	} | ||||
| 	else | ||||
| 	{ | ||||
| 		if (!_arrayType.isByteArray()) | ||||
| 			m_context << _arrayType.getBaseType()->getCalldataEncodedSize() << eth::Instruction::MUL; | ||||
| 		else if (_pad) | ||||
| 			m_context << u256(31) << eth::Instruction::ADD | ||||
| 				<< u256(32) << eth::Instruction::DUP1 | ||||
| 				<< eth::Instruction::SWAP2 << eth::Instruction::DIV << eth::Instruction::MUL; | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| void ArrayUtils::retrieveLength(ArrayType const& _arrayType) const | ||||
|  | ||||
| @ -60,10 +60,11 @@ public: | ||||
| 	/// Stack pre: end_ref start_ref
 | ||||
| 	/// Stack post: end_ref
 | ||||
| 	void clearStorageLoop(Type const& _type) const; | ||||
| 	/// Converts length to size (multiplies by size on stack), rounds up for byte arrays.
 | ||||
| 	/// Converts length to size (number of storage slots or calldata/memory bytes).
 | ||||
| 	/// if @a _pad then add padding to multiples of 32 bytes for calldata/memory.
 | ||||
| 	/// Stack pre: length
 | ||||
| 	/// Stack post: size
 | ||||
| 	void convertLengthToSize(ArrayType const& _arrayType) const; | ||||
| 	void convertLengthToSize(ArrayType const& _arrayType, bool _pad = false) const; | ||||
| 	/// Retrieves the length (number of elements) of the array ref on the stack. This also
 | ||||
| 	/// works for statically-sized arrays.
 | ||||
| 	/// Stack pre: reference
 | ||||
|  | ||||
							
								
								
									
										11
									
								
								Compiler.cpp
									
									
									
									
									
								
							
							
						
						
									
										11
									
								
								Compiler.cpp
									
									
									
									
									
								
							| @ -150,7 +150,7 @@ void Compiler::appendConstructor(FunctionDefinition const& _constructor) | ||||
| 	// copy constructor arguments from code to memory and then to stack, they are supplied after the actual program
 | ||||
| 	unsigned argumentSize = 0; | ||||
| 	for (ASTPointer<VariableDeclaration> const& var: _constructor.getParameters()) | ||||
| 		argumentSize += CompilerUtils::getPaddedSize(var->getType()->getCalldataEncodedSize()); | ||||
| 		argumentSize += var->getType()->getCalldataEncodedSize(); | ||||
| 
 | ||||
| 	if (argumentSize > 0) | ||||
| 	{ | ||||
| @ -208,8 +208,7 @@ void Compiler::appendCalldataUnpacker(TypePointers const& _typeParameters, bool | ||||
| 
 | ||||
| 	bigint parameterHeadEnd = offset; | ||||
| 	for (TypePointer const& type: _typeParameters) | ||||
| 		parameterHeadEnd += type->isDynamicallySized() ? 32 : | ||||
| 			CompilerUtils::getPaddedSize(type->getCalldataEncodedSize()); | ||||
| 		parameterHeadEnd += type->isDynamicallySized() ? 32 : type->getCalldataEncodedSize(); | ||||
| 	solAssert(parameterHeadEnd <= numeric_limits<unsigned>::max(), "Arguments too large."); | ||||
| 
 | ||||
| 	unsigned stackHeightOfPreviousDynamicArgument = 0; | ||||
| @ -228,8 +227,8 @@ void Compiler::appendCalldataUnpacker(TypePointers const& _typeParameters, bool | ||||
| 					// Retrieve data start offset by adding length to start offset of previous dynamic type
 | ||||
| 					unsigned stackDepth = m_context.getStackHeight() - stackHeightOfPreviousDynamicArgument; | ||||
| 					m_context << eth::dupInstruction(stackDepth) << eth::dupInstruction(stackDepth); | ||||
| 					ArrayUtils(m_context).convertLengthToSize(*previousDynamicType); | ||||
| 					m_context << u256(32) << eth::Instruction::MUL << eth::Instruction::ADD; | ||||
| 					ArrayUtils(m_context).convertLengthToSize(*previousDynamicType, true); | ||||
| 					m_context << eth::Instruction::ADD; | ||||
| 				} | ||||
| 				else | ||||
| 					m_context << u256(parameterHeadEnd); | ||||
| @ -240,7 +239,7 @@ void Compiler::appendCalldataUnpacker(TypePointers const& _typeParameters, bool | ||||
| 			else | ||||
| 			{ | ||||
| 				m_context << u256(offset); | ||||
| 				offset += CompilerUtils::getPaddedSize(type->getCalldataEncodedSize()); | ||||
| 				offset += type->getCalldataEncodedSize(); | ||||
| 			} | ||||
| 			break; | ||||
| 		default: | ||||
|  | ||||
| @ -92,7 +92,7 @@ void CompilerUtils::storeInMemoryDynamic(Type const& _type, bool _padToWordBound | ||||
| 		} | ||||
| 		else | ||||
| 		{ | ||||
| 			solAssert(type.getLocation() == ArrayType::Location::Storage, "Memory byte arrays not yet implemented."); | ||||
| 			solAssert(type.getLocation() == ArrayType::Location::Storage, "Memory arrays not yet implemented."); | ||||
| 			m_context << eth::Instruction::DUP1 << eth::Instruction::SLOAD; | ||||
| 			// stack here: memory_offset storage_offset length_bytes
 | ||||
| 			// jump to end if length is zero
 | ||||
| @ -177,8 +177,7 @@ void CompilerUtils::computeHashStatic(Type const& _type, bool _padToWordBoundari | ||||
| 
 | ||||
| unsigned CompilerUtils::loadFromMemoryHelper(Type const& _type, bool _fromCalldata, bool _padToWordBoundaries) | ||||
| { | ||||
| 	unsigned _encodedSize = _type.getCalldataEncodedSize(); | ||||
| 	unsigned numBytes = _padToWordBoundaries ? getPaddedSize(_encodedSize) : _encodedSize; | ||||
| 	unsigned numBytes = _type.getCalldataEncodedSize(_padToWordBoundaries); | ||||
| 	bool leftAligned = _type.getCategory() == Type::Category::String; | ||||
| 	if (numBytes == 0) | ||||
| 		m_context << eth::Instruction::POP << u256(0); | ||||
| @ -202,8 +201,7 @@ unsigned CompilerUtils::loadFromMemoryHelper(Type const& _type, bool _fromCallda | ||||
| 
 | ||||
| unsigned CompilerUtils::prepareMemoryStore(Type const& _type, bool _padToWordBoundaries) const | ||||
| { | ||||
| 	unsigned _encodedSize = _type.getCalldataEncodedSize(); | ||||
| 	unsigned numBytes = _padToWordBoundaries ? getPaddedSize(_encodedSize) : _encodedSize; | ||||
| 	unsigned numBytes = _type.getCalldataEncodedSize(_padToWordBoundaries); | ||||
| 	bool leftAligned = _type.getCategory() == Type::Category::String; | ||||
| 	if (numBytes == 0) | ||||
| 		m_context << eth::Instruction::POP; | ||||
|  | ||||
| @ -71,9 +71,6 @@ public: | ||||
| 	/// Stack pre: memory_offset value...
 | ||||
| 	/// Stack post: (memory_offset+length)
 | ||||
| 	void storeInMemoryDynamic(Type const& _type, bool _padToWordBoundaries = true); | ||||
| 	/// @returns _size rounded up to the next multiple of 32 (the number of bytes occupied in the
 | ||||
| 	///          padded calldata)
 | ||||
| 	static unsigned getPaddedSize(unsigned _size) { return ((_size + 31) / 32) * 32; } | ||||
| 
 | ||||
| 	/// Moves the value that is at the top of the stack to a stack variable.
 | ||||
| 	void moveToStackVariable(VariableDeclaration const& _variable); | ||||
|  | ||||
| @ -74,7 +74,7 @@ void ExpressionCompiler::appendStateVariableAccessor(VariableDeclaration const& | ||||
| 	{ | ||||
| 		// move offset to memory
 | ||||
| 		CompilerUtils(m_context).storeInMemory(length); | ||||
| 		unsigned argLen = CompilerUtils::getPaddedSize(paramType->getCalldataEncodedSize()); | ||||
| 		unsigned argLen = paramType->getCalldataEncodedSize(); | ||||
| 		length -= argLen; | ||||
| 		m_context << u256(argLen + 32) << u256(length) << eth::Instruction::SHA3; | ||||
| 
 | ||||
| @ -779,8 +779,9 @@ bool ExpressionCompiler::visit(IndexAccess const& _indexAccess) | ||||
| 		else | ||||
| 		{ | ||||
| 			u256 elementSize = | ||||
| 				location == ArrayType::Location::Storage ? arrayType.getBaseType()->getStorageSize() : | ||||
| 				CompilerUtils::getPaddedSize(arrayType.getBaseType()->getCalldataEncodedSize()); | ||||
| 				location == ArrayType::Location::Storage ? | ||||
| 					arrayType.getBaseType()->getStorageSize() : | ||||
| 					arrayType.getBaseType()->getCalldataEncodedSize(); | ||||
| 			solAssert(elementSize != 0, "Invalid element size."); | ||||
| 			if (elementSize > 1) | ||||
| 				m_context << elementSize << eth::Instruction::MUL; | ||||
| @ -798,7 +799,7 @@ bool ExpressionCompiler::visit(IndexAccess const& _indexAccess) | ||||
| 			switch (location) | ||||
| 			{ | ||||
| 			case ArrayType::Location::CallData: | ||||
| 				// no lvalue
 | ||||
| 				if (arrayType.getBaseType()->isValueType()) | ||||
| 					CompilerUtils(m_context).loadFromMemoryDynamic(*arrayType.getBaseType(), true, true, false); | ||||
| 				break; | ||||
| 			case ArrayType::Location::Storage: | ||||
| @ -1018,7 +1019,7 @@ void ExpressionCompiler::appendExternalFunctionCall(FunctionType const& _functio | ||||
| 	//@todo only return the first return value for now
 | ||||
| 	Type const* firstType = _functionType.getReturnParameterTypes().empty() ? nullptr : | ||||
| 							_functionType.getReturnParameterTypes().front().get(); | ||||
| 	unsigned retSize = firstType ? CompilerUtils::getPaddedSize(firstType->getCalldataEncodedSize()) : 0; | ||||
| 	unsigned retSize = firstType ? firstType->getCalldataEncodedSize() : 0; | ||||
| 	m_context << u256(retSize) << u256(0); | ||||
| 
 | ||||
| 	if (bare) | ||||
| @ -1048,8 +1049,8 @@ void ExpressionCompiler::appendExternalFunctionCall(FunctionType const& _functio | ||||
| 	if (_functionType.gasSet()) | ||||
| 		m_context << eth::dupInstruction(m_context.baseToCurrentStackOffset(gasStackPos)); | ||||
| 	else | ||||
| 		// send all gas except for the 21 needed to execute "SUB" and "CALL"
 | ||||
| 		m_context << u256(_functionType.valueSet() ? 6741 : 41) << eth::Instruction::GAS << eth::Instruction::SUB; | ||||
| 		// send all gas except for the 41 / 6741 needed to execute "SUB" and "CALL"
 | ||||
| 		m_context << u256(41 + (_functionType.valueSet() ? 6700 : 0)) << eth::Instruction::GAS << eth::Instruction::SUB; | ||||
| 	m_context << eth::Instruction::CALL; | ||||
| 	auto tag = m_context.appendConditionalJump(); | ||||
| 	m_context << eth::Instruction::STOP << tag;	// STOP if CALL leaves 0.
 | ||||
| @ -1080,7 +1081,7 @@ void ExpressionCompiler::appendArgumentsCopyToMemory( | ||||
| 		appendTypeConversion(*_arguments[i]->getType(), *expectedType, true); | ||||
| 		bool pad = _padToWordBoundaries; | ||||
| 		// Do not pad if the first argument has exactly four bytes
 | ||||
| 		if (i == 0 && pad && _padExceptionIfFourBytes && expectedType->getCalldataEncodedSize() == 4) | ||||
| 		if (i == 0 && pad && _padExceptionIfFourBytes && expectedType->getCalldataEncodedSize(false) == 4) | ||||
| 			pad = false; | ||||
| 		appendTypeMoveToMemory(*expectedType, pad); | ||||
| 	} | ||||
|  | ||||
| @ -570,11 +570,12 @@ bool ArrayType::operator==(Type const& _other) const | ||||
| 	return isDynamicallySized() || getLength()  == other.getLength(); | ||||
| } | ||||
| 
 | ||||
| unsigned ArrayType::getCalldataEncodedSize() const | ||||
| unsigned ArrayType::getCalldataEncodedSize(bool _padded) const | ||||
| { | ||||
| 	if (isDynamicallySized()) | ||||
| 		return 0; | ||||
| 	bigint size = bigint(getLength()) * (isByteArray() ? 1 : getBaseType()->getCalldataEncodedSize()); | ||||
| 	bigint size = bigint(getLength()) * (isByteArray() ? 1 : getBaseType()->getCalldataEncodedSize(_padded)); | ||||
| 	size = ((size + 31) / 32) * 32; | ||||
| 	solAssert(size <= numeric_limits<unsigned>::max(), "Array size does not fit unsigned."); | ||||
| 	return unsigned(size); | ||||
| } | ||||
|  | ||||
							
								
								
									
										14
									
								
								Types.h
									
									
									
									
									
								
							
							
						
						
									
										14
									
								
								Types.h
									
									
									
									
									
								
							| @ -120,8 +120,10 @@ public: | ||||
| 
 | ||||
| 	/// @returns number of bytes used by this type when encoded for CALL, or 0 if the encoding
 | ||||
| 	/// is not a simple big-endian encoding or the type cannot be stored in calldata.
 | ||||
| 	/// Note that irrespective of this size, each calldata element is padded to a multiple of 32 bytes.
 | ||||
| 	virtual unsigned getCalldataEncodedSize() const { return 0; } | ||||
| 	/// If @a _padded then it is assumed that each element is padded to a multiple of 32 bytes.
 | ||||
| 	virtual unsigned getCalldataEncodedSize(bool _padded) const { (void)_padded; return 0; } | ||||
| 	/// Convenience eversion of @see getCalldataEncodedSize(bool)
 | ||||
| 	unsigned getCalldataEncodedSize() const { return getCalldataEncodedSize(true); } | ||||
| 	/// @returns true if the type is dynamically encoded in calldata
 | ||||
| 	virtual bool isDynamicallySized() const { return false; } | ||||
| 	/// @returns number of bytes required to hold this value in storage.
 | ||||
| @ -176,7 +178,7 @@ public: | ||||
| 
 | ||||
| 	virtual bool operator==(Type const& _other) const override; | ||||
| 
 | ||||
| 	virtual unsigned getCalldataEncodedSize() const override { return m_bits / 8; } | ||||
| 	virtual unsigned getCalldataEncodedSize(bool _padded = true) const override { return _padded ? 32 : m_bits / 8; } | ||||
| 	virtual bool isValueType() const override { return true; } | ||||
| 
 | ||||
| 	virtual MemberList const& getMembers() const { return isAddress() ? AddressMemberList : EmptyMemberList; } | ||||
| @ -247,7 +249,7 @@ public: | ||||
| 	virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override; | ||||
| 	virtual bool operator==(Type const& _other) const override; | ||||
| 
 | ||||
| 	virtual unsigned getCalldataEncodedSize() const override { return m_bytes; } | ||||
| 	virtual unsigned getCalldataEncodedSize(bool _padded) const override { return _padded && m_bytes > 0 ? 32 : m_bytes; } | ||||
| 	virtual bool isValueType() const override { return true; } | ||||
| 
 | ||||
| 	virtual std::string toString() const override { return "string" + dev::toString(m_bytes); } | ||||
| @ -271,7 +273,7 @@ public: | ||||
| 	virtual TypePointer unaryOperatorResult(Token::Value _operator) const override; | ||||
| 	virtual TypePointer binaryOperatorResult(Token::Value _operator, TypePointer const& _other) const override; | ||||
| 
 | ||||
| 	virtual unsigned getCalldataEncodedSize() const { return 1; } | ||||
| 	virtual unsigned getCalldataEncodedSize(bool _padded) const { return _padded ? 32 : 1; } | ||||
| 	virtual bool isValueType() const override { return true; } | ||||
| 
 | ||||
| 	virtual std::string toString() const override { return "bool"; } | ||||
| @ -302,7 +304,7 @@ public: | ||||
| 	virtual bool isImplicitlyConvertibleTo(Type const& _convertTo) const override; | ||||
| 	virtual TypePointer unaryOperatorResult(Token::Value _operator) const override; | ||||
| 	virtual bool operator==(const Type& _other) const override; | ||||
| 	virtual unsigned getCalldataEncodedSize() const override; | ||||
| 	virtual unsigned getCalldataEncodedSize(bool _padded) const override; | ||||
| 	virtual bool isDynamicallySized() const { return m_hasDynamicLength; } | ||||
| 	virtual u256 getStorageSize() const override; | ||||
| 	virtual unsigned getSizeOnStack() const override; | ||||
|  | ||||
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